Albert ball



(No Model.)

A. BALL.

GORE BREAKER FOR ANNULAR ROCK DRILLS. No. 366,913. Patented July19,1887.

4 E H Q I A E Q- 3 S Ov 'J-g l i. H I H wig-7365583 fnvenor yfla 6 0717066167. y L A Q 7oer (r fluorney N. PETERS. molnfio umr. Wuhinglnm D4 0NITED STATES ATENT' OFFICE ALBERT BALL, OF GLAREMOFT, NEYV HAMPSHIRE,ASSIGNOR TO THE SULLIVAN MACHINE COMPANY, OF SAME PLACE.

CORE-BREAKER FOR ANNULAR ROCK-DRILLS.

SPECIFICATION forming part of Letters Patent Nb. 366,913, dated July 19,1887.

Application filed November 13, 1886. Serial No. 218,775.

To all whom it may concern.-

Beit known that I, ALBERT BALL, of Claremont, in the county of Sullivanand State of New Hampshire, have invented a new and ImprovedOore'Breaker for Annular Eock- Drills; and I do hereby declare that thefollowing is a full and exact description of the same, reference beinghad to the accompanying drawings, and to the letters of reference markedthereon.

My invention relates to improvements in prospecting or rock-boringannular drills; and my object is to obtain the longest and most perfectcore and to break off and secure the same in the most effective manner.It is a modification of and utilizes some of the de vices shown in threeseveral Letters Patent heretofore granted upon applications made by me,and severally numbered 315,887, 315,888, and 315,889, which lastnameddevices, so far as shown in said Letters Patent, are disclai med in thisapplication.

In this improvement the core is held or broken off by a number (one canbe used, but I prefer four) of spring-wedges riveted to a shortcylindrical holder, the wedges being at the end of the springs and belowthe cylindrical holder or carrier and the springs springing outwardagainst the sides of the shell or tube away from the core. This outwardtension of the springs assists also in keeping the holder in itsposition when at rest. The wedgeholder (and wedges) is driven by wiresor rods, (I prefer two,) which work in protected grooves in the walls ofthe corebarrcl, and which wires or rods are driven by direct pressure ofthe water, brought to bear by means of a driving-valve operated at thedrilling-machine by dropping a ball.

For the better comprehension of my invention reference should be had tothe accompanying drawings, in which- Figure 1 is a vertical centralsection of the drill-head, the spring wedge-holder and the shell or tubewithin which the wedge-holder moves and which couples the drill-head tothe length of tubing nearest to the drill-head and commonly known as thecore-barrel, the core-barrel, the wires or rods which work in groovestherein, and an inside tube or shell to cover and protect the same, thevalve to (No model.)

which the wires or rods are secured, and the coupling which connects thecore-barrel to the length of tubingncxt above; Fig. 2, a top view of thevalve; Fig. 3, avertical section of the valve and valve-bar carrying thewires; Fig.4, a vertical section ofthe val ve receiver or holder;Fig.5,a bottom view of the same; Fig.6,a crosssection of thecore-barrel, showing the grooves wherein the rods or wires work and themethod of protecting them (indicated also in Fig. 1;) Fig. 7, a verticalsection of the wedge holder or carrier and the spring-wedges attachedthereto; Fig. 8, a crosssection of the core-bar rcl, showing the grooveswhcrcin'the rods or wires work and a different method of protecting themthan that shown in Figsl and 6.

In the different drawings like letters refer to corresponding parts.

A represents the drill-head, made, preferably, with a bevcl at the top.for the better reception of the breaking-wedges I I I when these areforced-down. The bevel is, however, so cut as to leave at the top of thedrillhead a narrow cylindrical shelf or face at right angles to itsvertical sides, and upon which the wedges rest when they are sprnn g upand back and not at work.

D is a'cylindrical shell which receives the wedge-holder C, and servesas a coupling to unite the head A with the core-barrel B, and its insidediameter is preferably greater than that of the core-barrcl anddrill-head, so as to leave a chamber or recess to receive thewedgeliolder O. This wedge holder 0 carries the spring-wcdges I I I,which are riveted to the same at the upper ends, and has a slot oppositeeach wedge to allow them to work in and out. \Vhen this holder is inposition, the wedges exert a constant pressure outward against the sidesof the shell byv reason of the curves of the springs I I, and thusenable the holder to maintain its position when at rest.

E E, Figs. 1 and 3, are two wires or rods which impinge at the lowerends against the top of the wedge-holder O, are secured at the otherends to the valve-bar G, Figs. 1, 2, and 8, and work freely in slots orgrooves F F, Figs. 6 and 8, in the inside wall of the corebarrel.

H H, Figs. 1 and 6, is an interior tube secured within the core-barrelB, and protecting l'LO the slots F.

the slots and wires from mud, water, and similar obstruction, andserving-also, to keep the wires in their places.

K K, Fig. 8, show a substitute for the tube H in the form of strips ofmetal inserted in the inside wall of the core-barrel, so as to coverinto effective action.

N is a spiral spring which sets on the bot tom of the valve receiver orholder 0 and fits within the bottom of the valve M. spring N is weakenough to accede to the pressure of the valve when the ball is dropped,it has sufficient strength to prevent the pressure of thewater againstthe walls of the valve from forcing the valve down before the ball isdropped.

Before the wedges I are forced down they are'jnst above the head A andare back out of the Way of the core, as in Fig.1. After they are forceddown they are between the beveled walls of the drill-head and the coreand firmly grip the core, so that when the rods are pulled up the coreis pulled up with them.

Among theadvantages of my device are that the lifting-wedges and theirholder are out of the way of the core until needed and neither Wear thecore nor are worn by it. When it is desired to break the core, theoperator can quickly and effectively force the wedges into action. face,is easily removed and the core-breaker is quickly restored to itsposition ofinaction.

Y Having thus described my invention, what I claim, and desire to secureby Letters Patent,

. is as follows:

for the purposes set forth.

The core, when brought to the sur- 2. In an annular drill, theCOI11bill2tllO11,Vil3h the drill-head A, the core-barrel B, and theintermediate coupling-shell, D,of the cylindrical holder 0, providedwith spring-wedges I,

the rods E, bearing upon said holder, and a direct-acting valve, M, towhich said rods are connected, substantially as and for the purposes setforth.

3. In an annular drill, the combination,with the drill-head A, thecore-barrel B, and the intermediate coupling-shell, D,of the cylindricalholder 0, provided with spring-wedges I, the rods E, bearing upon saidholder, the direct-acting valve M, provided with the bar G, to whichsaidrods are connected, and the ball L for closing said valve, substantiallyas and for the purposes set forth.

4. In an annular drill,the combinatiomwith the drill-head A, thecore-barrel B, and the intermediate coupling-shell, D,of the cylindrical holder 0, provided with spring-wedges I,

the rods E, bearing upon said holder, the direct-acting valve M,provided with the barG, to which said rods are connected, thecounterbalancing-spring N, and the ball L, substantially as and for thepurposes set forth.

5. In an annular drill,the combination,with the drill-head A, beveledwithin its upper end, and the core-barrel B, having longitudinalgroovesin its walls, of the cylindrical holder 0, provided withspring-wedges I and a slot opposite each wedge, the rods E, passingthrough said grooves and bearing upon the holder, a protecting-cover forthe grooves,and a direct-acting valve, to which the rods are connected,substantially as and for the purposes set forth.

6. In an annular drill,the cornbination,with the drill-headAandthelongitudinally-grooved eore'barrel B, of the cylindrical holder 0,pro vided with the spring-Wedges I, the rods E, the protectors for thegrooves in the core-barrel, the valve-receiver O, the valve M, the

spring N, and the ball L, substantially as described and shown.

In testimony whereof I affix inysiguature in presence of two witnesses.

' ALBERT BALL.

Witnesses:

H. BELLE DUTTON, GEO. 0. BALL.

